Microcystin is a toxin produced by the bacteria in the water cyano. Microcystin can cause the death

The contents of Natural toxicants in food Key concepts toxic substances formed during food processing key concepts toxic chemical substances of microbial origin Key concepts Heavy metals Key concepts Other contaminants in food contaminants from the environment Chemical substances in the form remains the treatment of animals and plants Key Terms References
Posted: 3rd July 2009 Number of views: 26181 Category: Chemistry of food. We often think that the toxics coming from sources that are created man, but the fact that many may be naturally present in food. So toxic substances in food may be its natural constituents or unnatural ingredients which may occur as a result of contamination in the food chain.
Contaminants in food can reach uncontrollable environmental or may be residues (residues) treatment siniora food industries which man used at different stages of production. Thus, contaminants are substances that are not intentionally added to food but results from contamination during production, packaging, transportation, food processing or as a consequence of some natural processes. Chemical contaminants that are found in foods, and considering their source, can be divided into: natural contaminants such as mycotoxins originating from mold and bacteria enterotoxins from environmental contaminants such as dioxins, polycyclic biphenyls, polycyclic aromatic siniora food industries hydrocarbons and contaminants produced during food processing, such as klorpropanoli, acrylamide, residues of cleaning agents and other
Many FAKORA affect the absorption of toxic substances in food and the toxic effects of these substances. Among the most important factors are the concentration or dose of toxic substances, siniora food industries the length of exposure-retention, siniora food industries fizikalnohemijska properties, the route of entry, the individual resistance and others.
Particles of toxicant in food can be molecules, atoms and ions. To express their toxic action must pass through the epithelium of the digestive tract. The basic mechanism of absorption of toxicants is based on the passage of these particles through cell membranes causing toxic changes in the body. Toxic changes can be: iritantnost, allergies, corrosivity, teratogenicity, embryotoxicity, genotoxicity, carcinogenicity, mutagenicity, etc.. Teratogenicity was characterized by malformations in the fetus. Teratogenic period occurs in a very narrow period of fetal development. Mutagenic activity has an impact on the change of gene structure and hereditary characteristics of living organisms with long lasting effects on offspring. Carcinogenicity - properties of substances that can cause cancer or in combination with any other materials or external factors siniora food industries facilitate its creation and development. The most common carcinogens in food dioxins, nitrites, benzenoid compounds, heavy metals and mycotoxins. Genotoxicity is defined as adverse effects on the genetic material, not necessarily associated with mutagenošću, may be invoked by DNA damage without direct evidence of mutation.
Naturally occurring toxic substances in food may come from plant and animal siniora food industries foods. The feeds are present as natural toxins in plants, toxic tari in mushrooms, natural toxins that can use an as pesticides, tokisini animal origin etc..
There are frequent examples of toxic substances produced by algae, and that the eco system of food other marine animals, so that toxins are transferred to the other inhabitants of the eco system. Fresh drinking natural water also may contain toxic substances.
Microcystin is a toxin produced by the bacteria in the water cyano. Microcystin can cause the death of livestock and wildlife, but also can cause poisoning people. The consequence of intoxication Microcystin can be liver disease.
Natural toxins and the like substances in plants. Natural toxins in plants can be svrastati into several groups, such as enzyme inhibitors, cijanogenični glycosides, siniora food industries glukokozinolati siniora food industries in lisnatomm vegetables (broccoli, cabbage), lectin proteins - phytohemagglutinin latirogeni - pirolizidnski alkaloids in Nauta, poisonous mushrooms and the like. However, some components of food may affect the reduced utilization of vitamins in the body. Such substances are antivitaminske antitijaminske composing, green soybeans, rice bran, beet, etc.. A similar effect is created siniora food industries avidin in raw egg whites. Bioflavonoids such as quercetin and rutin inactivate vitamin B1 - thiamine.
Enzyme siniora food industries inhibitors. Examples of cholinesterase inhibitors are enzymes that can be found in potatoes, paradjzu and eggplant. Acetylcholine is a neurotransmitter in the brain and peripheral nervous system. The function of the enzyme cholinesterase is the breakdown of acetylcholine. If cholinesterase-inhibiting then continued presence of acetylcholine causes prestimulation post-synaptic nerve cells, causing symptoms of poisoning. siniora food industries Synthetic insecticides orgnofosfornih compounds and carbamates cause the same biochemical mechanisms. Glycoalkaloids such as solanine and kaconin the anticholinesterase.
Protease inhibitors are proteins that have the ability to